diff --git a/patches/october_2012/find_wrong_voucher.py b/patches/october_2012/find_wrong_voucher.py
index 8acc278dae6..637ed1d70eb 100644
--- a/patches/october_2012/find_wrong_voucher.py
+++ b/patches/october_2012/find_wrong_voucher.py
@@ -1,9 +1,16 @@
 def execute():
 	import webnotes
+	from webnotes.utils import flt
 	vouchers = webnotes.conn.sql("""
-		select parent, parenttype, modified from `tabPurchase Taxes and Charges`
+		select parent, parenttype, modified, sum(if(add_deduct_tax='Add', tax_amount, -tax_amount)) as tax from `tabPurchase Taxes and Charges`
 		where modified >= '2012-07-12'
-		and category = 'Valuation' and tax_amount != 0
+		and category in ('Total', 'Valuation and Total')
 		and parenttype != 'Purchase Taxes and Charges Master'
+		group by parenttype, parent
 	""")
-	print vouchers
\ No newline at end of file
+	
+	for d in vouchers:
+		total_tax = webnotes.conn.sql("""select total_tax from `tab%s` where name = %s""" %
+			(d[1], '%s'), d[0])
+		if total_tax and flt(total_tax[0][0]) != flt(d[3]):
+			print d
\ No newline at end of file